Spatial separation of antiferromagnetism and superconductivity in CeCu2Si2

被引：13
作者：
Faulhaber, E. [1 ]
Stockert, O.
Schmalzl, K.
Jeevan, H. S.
Deppe, M.
Geibel, C.
Steglich, F.
Loewenhaupt, M.
机构：
[1] Tech Univ Dresden, Inst Festkorperphys, D-01062 Dresden, Germany
[2] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期
关键词：
heavy fermion; superconductivity; neutron scattering; in-situ AC-susceptibility;
D O I：
10.1016/j.jmmm.2006.10.049
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Depending on the actual stoichiometry, CeCu2Si2 shows either antiferromagnetic order, superconductivity or both phenomena. We investigated a single crystal, where Tc approximate to TN = 0.7K are roughly degenerate. A custom-made in-situ AC-susceptibility setup was utilized for an elastic neutron scattering experiment to directly correlate antiferromagnetic intensity and AC-susceptibility. We found antiferromagnetic satellite peaks together with a diamagnetic signal below TN. The results can be understood by a temperature and magnetic. field dependent spatial separation of antiferromagnetic and superconducting volume fractions. (c) 2006 Published by Elsevier B. V.
引用
收藏
页码：295 / 297
页数：3
相关论文
共 7 条
  • [1] UNUSUAL B-T PHASE-DIAGRAM OF THE HEAVY-FERMION SUPERCONDUCTOR CECU2SI2
    BRULS, G
    WOLF, B
    FINSTERBUSCH, D
    THALMEIER, P
    KOUROUDIS, I
    SUN, W
    ASSMUS, W
    LUTHI, B
    LANG, M
    GLOOS, K
    STEGLICH, F
    MODLER, R
    [J]. PHYSICAL REVIEW LETTERS, 1994, 72 (11) : 1754 - 1757
  • [2] Magnetic field dependence of the magnetic order in A-type CeCu2Si2
    Faulhaber, E
    Stockert, O
    Jeevan, HS
    Prokes, K
    Deppe, M
    Geibel, C
    Steglich, F
    Loewenhaupt, M
    [J]. PHYSICA B-CONDENSED MATTER, 2005, 359 : 357 - 359
  • [3] FAULHABER E, UNPUB
  • [4] Magnetic order and superconductivity in single-crystalline CeCu2Si2
    Stockert, O
    Andreica, D
    Amato, A
    Jeevan, HS
    Geibel, C
    Steglich, F
    [J]. PHYSICA B-CONDENSED MATTER, 2006, 374 : 167 - 170
  • [5] Antiferromagnetism in CeCu2(Si1-xGex)2:: nature of the A phase
    Stockert, O
    Deppe, M
    Faulhaber, E
    Jeevan, HS
    Schneider, R
    Stüsser, N
    Geibel, C
    Loewenhaupt, M
    Steglich, F
    [J]. PHYSICA B-CONDENSED MATTER, 2005, 359 : 349 - 356
  • [6] Nature of the A phase in CeCu2Si2 -: art. no. 136401
    Stockert, O
    Faulhaber, E
    Zwicknagl, G
    Stüsser, N
    Jeevan, HS
    Deppe, M
    Borth, R
    Küchler, R
    Loewenhaupt, M
    Geibel, C
    Steglich, F
    [J]. PHYSICAL REVIEW LETTERS, 2004, 92 (13) : 136401 - 1
  • [7] High-resolution magnetization studies of the heavy-fermion superconductor CeCu2Si2 at very low temperatures and in high magnetic fields -: art. no. 214504
    Tayama, T
    Lang, M
    Lühmann, T
    Steglich, F
    Assmus, W
    [J]. PHYSICAL REVIEW B, 2003, 67 (21)
1